Event: Division 1

Opponent Rating Result
Graeme Hood 1824 1 - 0
Richard Maclannan 1799 0 - 1
Robert Ashworth 1928 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1850 = (5551 + 400 * (1 - 1)) / 3)

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